1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf3b788a1a12d4290d121faf57aa84aaab250db9ce355ff07b3a5aa3bfb9a979. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ad1b4fd0-62be-4a59-a292-dbdf3019457b.json and https://artists.proofprofile.net/proofs/artist/ad1b4fd0-62be-4a59-a292-dbdf3019457b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca423dd4220a2edddc78f35a899c57be1541a978cb0aa937bc72c81b385ee6ac. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX282193777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x421f48584161ef8bee7e1f0c6988091e2292491ece4be89acace53d0a6e703d1. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR96X2150829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97daee3d93362eaf1e059196fbd3affd885bccbd109a2fbc315a9d524cdf9c0c. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T23:03:14Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR96X2150977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f9e4144ff07fde8d20c581a3abd4665f501c67fc83e154db39b776dc733fcaa. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR96X2230960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc24c956de337e3cdfcdf226d80819bdd61131af246a74e2dd2e5f9a4b7960602. Chain 2 (Bitcoin): anchored in block 957539 (2026-07-11T08:09:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR96X2230962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x350619cc7e73e6dfd29045af6fe4e78dcd676f0a5d85510682f75084b857f175. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR96X2230964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb614b3bb4e0bafac31f7faf4165fba82619f2ba505ac1d44d6f383b35d4e75fa. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR96X2230966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3930f99bb4f91a83ab1ec7b237f0da17ccbc03d4694b129b65c3ab7b45b730b. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR96X2230967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed19089b075e080ec36cd4f4c5170f9771a8667026af9b6fcf122d2e5e1e7410. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:04:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR96X2230968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c72723991e90bcc1ff91e9d05f8deb40aa7dc8e288485990c2c1444c688581. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR96X2230971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb04c47e7da4ec353dda4a262160c81a5151ac8f67ab46995c1068a207c03c2e2. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T13:55:40Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR96X2230973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc330bc699b035d419bef8b3572b3e08349c37d804cda00414e18344418fa0ae5. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T13:49:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA0M1929507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a3a7b44f3ad704152d25e91fe04fd11cfbf6064addc73a82de47469162db0c9. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:45:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRW242359893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58aef822b23a5ccd3bf1b1ecc9b36ba03e43e7f7fd5e3f9fcc9e8d2323b79840. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:30:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA0M1930956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x511724c5aecf00113f434ce4031c6e796615cc1b73f92160a19470aab00b1ada. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA072382085.
Tinh Hoa Cypher (feat. RPT L.A.K.E, Thành Draw, KraziNoyze & Hustlang Robber)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeeff39c02f7ec56c1f05f8fb6f672f3313b46ccb20ff8065104e3f68d815268. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWQ2192138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5445b8c2ea9703612dc978a014904ca55873ac8c079f1cf4f7c24c2ebe344adf. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US38Y2504859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4986ee9d94c3be481f9afacfb5561e7bd08d433e8f035a1c36f7307027daf8ba. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX452003326.